Aluminum Clad Fiberglass Windows

Marvin’s High-Density Fiberglass material and innovative frame design offer exceptional thermal performance and durability, helping maintain comfortable interior temperatures year-round. The Integrated Mull Channel adds up to ½” of mull reinforcement without compromising sightlines, enhancing the window’s structural performance. Plus, the frame’s recessed design allows for easy wall integration and a consistent, clean frame reveal.